390DIB25 25 mm Dia. Standard Interference Bandpass Filter 390nm

The 390DIB25 is a 25 mm diameter Standard Interference Bandpass Filter, specifically designed to transmit light in the 390nm range while blocking light at other wavelengths. This filter is sourced from Knight Optical, a reputable vendor known for their high-quality optical components.

The filter is made from UVFS MAL-1965, a material specifically chosen for its optical properties in the ultraviolet spectrum. It has a base shape of a circle, a common choice for its ease of integration into various optical systems. The filter's thickness is 6.1mm, providing sufficient structural integrity while minimizing unwanted optical effects.

The 390DIB25 features a cut-on wavelength of 385nm and a cut-off wavelength of 395nm, meaning it begins transmitting light at 385nm and stops transmitting at 395nm. The central wavelength (CWL) of this filter is 390nm, indicating the peak of its transmission curve. This makes it ideal for applications that require narrowband filtering in the ultraviolet range.

Both the front and back surfaces of the filter are coated with KNI 390DIB, a proprietary coating developed by Knight Optical. This coating enhances the filter's performance by reducing surface reflections and improving transmission efficiency. The filter's shape is described as a Thin Lens, suggesting it may have additional optical power or be designed to correct optical aberrations.

The 390DIB25 is currently in stock and available for immediate purchase through the Knight Optical website. For more information or to place an order, users can follow the provided weblink.